Type of Document	Thesis
Author	Lee, Dorca D.
Author's Email Address	dorcalee@gmail.com
URN	etd-07212010-163335
Title	Response Surface Methodology for the Analysis of Grounding in a Medium Voltage DC Shipboard Power System
Degree	Master of Science
Department	Electrical and Computer Engineering, Department of
Advisory Committee	Advisor Name Title Thomas Baldwin Committee Chair Chris Edrington Committee Co-Chair Michael Steurer Committee Member Victor DeBrunner Committee Member
Keywords	Grounding Medium Voltage DC Power System Response Surface Models Multivariate Adaptive Regression Splines Maximum Likelihood Estimation Gaussian Process
Date of Defense	2010-07-02
Availability	unrestricted
Abstract Response surface methodology is used to study the effectiveness of different grounding schemes implemented for the mitigation of a single-line-to-ground fault in a medium voltage DC (MVDC) power system. Multivariate adaptive regression splines (MARS) models are used to obtain preliminary functional relationships between the input parameters and response variables of the MVDC power system. From the MARS models, probability density plots are constructed for each response variable under all grounding schemes. Additionally, for the different grounding schemes, Sobol total sensitivity indices are computed to gauge the impact of the input parameters on the response variables. Lastly, for response surface models in which MARS shows significant prediction error, maximum likelihood estimation Gaussian process (MLEGP) models are built.
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